QUINCY – The bill inspired by Puppy Doe that would toughen the state’s animal cruelty laws still hasn’t been approved by legislators.

The state Senate met for an informal session Thursday and did not vote on a bill that would increase the maximum prison sentence for animal cruelty from five to seven years and the maximum fine from $2,500 to $5,000. For repeat offenders, the maximum prison sentence would rise to 10 years and the fine to $10,000.

Supporters of the bill, including state Rep. Bruce Ayers, D-Quincy, and dozens of animal-protection groups, had hoped the bill would be adopted and sent to Gov. Deval Patrick’s office Thursday. During informal session, which started Aug. 1, a bill is tougher to pass because any single lawmaker can block it.

On Thursday afternoon, Ayers said he hopes the Senate will approve the Puppy Doe-inspired bill when it reconvenes for another informal session Monday.

Puppy Doe is the name given to a pit bull that was brutally abused in Quincy last year. The dog’s injuries were so bad that she had to be euthanized.